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Finding the Fourth Proportional to 14,872.60, 20,528.60 and 8,589.16

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Solution

The fourth proportional to 14,872.60, 20,528.60 and 8,589.16 is: 11,855.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,872.60 : 20,528.60 = 8,589.16 : x
  2. Step 2: Convert to fraction form
    14,872.60/20,528.60 = 8,589.16/x
  3. Step 3: Cross multiply
    14,872.60x = 20,528.60 × 8,589.16
  4. Step 4: Simplify right side
    14,872.60x = 176,323,429.98
  5. Step 5: Solve for x
    x = 176,323,429.98/14,872.60
  6. Step 6: Final answer
    x = 11,855.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.